package ooday01;
/** 构造方法的演示*/
public class ConsDemo {
    public static void main(String[] args) {
        Student zs=new Student();
        Student ls=new Student("李四",25);
        Student ww=new Student("王五",24,"jsd2302","001");

        zs.sayHi();
        ls.sayHi();
        ww.sayHi();

    }

}
